-/*******************************************************************************\r
- * Copyright (c) 2015 Association for Decentralized Information Management\r
- * in Industry THTH ry.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * Semantum Oy - initial API and implementation\r
- *******************************************************************************/\r
-package org.simantics.browsing.ui.model.queries;\r
-\r
-import java.util.Collections;\r
-\r
-import org.simantics.browsing.ui.BuiltinKeys;\r
-import org.simantics.browsing.ui.NodeContext;\r
-import org.simantics.browsing.ui.model.actions.ActionBrowseContext;\r
-import org.simantics.browsing.ui.model.browsecontexts.ActionBrowseContextRequest;\r
-import org.simantics.db.ReadGraph;\r
-import org.simantics.db.Resource;\r
-import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;\r
-import org.simantics.db.common.request.Queries;\r
-import org.simantics.db.common.request.UnaryRead;\r
-import org.simantics.db.exception.DatabaseException;\r
-import org.simantics.db.layer0.adapter.Remover;\r
-import org.simantics.project.ontology.ProjectResource;\r
-\r
-/**\r
- * @author Tuukka Lehtonen\r
- * @since 1.18.1\r
- */\r
-public class IsNodeContextRemovable extends UnaryRead<NodeContext, Boolean> {\r
-\r
- public IsNodeContextRemovable(NodeContext context) {\r
- super(context);\r
- }\r
-\r
- @Override\r
- public Boolean perform(ReadGraph graph) throws DatabaseException {\r
- boolean result = false;\r
- try {\r
- ActionBrowseContext defaultContext = graph.syncRequest(\r
- new ActionBrowseContextRequest(Collections.singleton(ProjectResource.getInstance(graph).ProjectActionContext)),\r
- TransientCacheAsyncListener.<ActionBrowseContext>instance());\r
- ActionBrowseContext browseContext = ActionBrowseContext.get(graph, parameter, defaultContext);\r
- if (browseContext != null && !browseContext.canRemove(graph, parameter))\r
- return false;\r
- result = true;\r
- } catch (DatabaseException e) {\r
- return false;\r
- }\r
-\r
- Object input = parameter.getConstant(BuiltinKeys.INPUT);\r
- if (result && input instanceof Resource) {\r
- Remover remover = graph.syncRequest(Queries.adapt((Resource) input, Remover.class, true));\r
- if (remover != null)\r
- return remover.canRemove(graph, null) == null;\r
- }\r
- return result;\r
- }\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2015 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Semantum Oy - initial API and implementation
+ *******************************************************************************/
+package org.simantics.browsing.ui.model.queries;
+
+import java.util.Collections;
+
+import org.simantics.browsing.ui.BuiltinKeys;
+import org.simantics.browsing.ui.NodeContext;
+import org.simantics.browsing.ui.model.actions.ActionBrowseContext;
+import org.simantics.browsing.ui.model.browsecontexts.ActionBrowseContextRequest;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
+import org.simantics.db.common.request.Queries;
+import org.simantics.db.common.request.UnaryRead;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.adapter.Remover;
+import org.simantics.project.ontology.ProjectResource;
+
+/**
+ * @author Tuukka Lehtonen
+ * @since 1.18.1
+ */
+public class IsNodeContextRemovable extends UnaryRead<NodeContext, Boolean> {
+
+ public IsNodeContextRemovable(NodeContext context) {
+ super(context);
+ }
+
+ @Override
+ public Boolean perform(ReadGraph graph) throws DatabaseException {
+ boolean result = false;
+ try {
+ ActionBrowseContext defaultContext = graph.syncRequest(
+ new ActionBrowseContextRequest(Collections.singleton(ProjectResource.getInstance(graph).ProjectActionContext)),
+ TransientCacheAsyncListener.<ActionBrowseContext>instance());
+ ActionBrowseContext browseContext = ActionBrowseContext.get(graph, parameter, defaultContext);
+ if (browseContext != null && !browseContext.canRemove(graph, parameter))
+ return false;
+ result = true;
+ } catch (DatabaseException e) {
+ return false;
+ }
+
+ Object input = parameter.getConstant(BuiltinKeys.INPUT);
+ if (result && input instanceof Resource) {
+ Remover remover = graph.syncRequest(Queries.adapt((Resource) input, Remover.class, true));
+ if (remover != null)
+ return remover.canRemove(graph, null) == null;
+ }
+ return result;
+ }
+
+}